/*

jQuery Tags Input Plugin 1.3.3
Copyright (c) 2011 XOXCO, Inc
Documentation for this plugin lives here:
http://xoxco.com/clickable/jquery-tags-input
Licensed under the MIT license:
http://www.opensource.org/licenses/mit-license.php

ben@xoxco.com

*/

(function($) {

var delimiter = new Array();
var tags_callbacks = new Array();
$.fn.doAutosize = function(o){
var minWidth = $(this).data('minwidth'),
maxWidth = $(this).data('maxwidth'),
val = '',
input = $(this),
testSubject = $('#'+$(this).data('tester_id'));

if (val === (val = input.val())) {return;}

// Enter new content into testSubject
var escaped = val.replace(/&/g, '&amp;').replace(/\s/g,' ').replace(/</g, '&lt;').replace(/>/g, '&gt;');
testSubject.html(escaped);
// Calculate new width + whether to change
var testerWidth = testSubject.width(),
newWidth = (testerWidth + o.comfortZone) >= minWidth ? testerWidth + o.comfortZone : minWidth,
currentWidth = input.width(),
isValidWidthChange = (newWidth < currentWidth && newWidth >= minWidth)
|| (newWidth > minWidth && newWidth < maxWidth);

// Animate width
if (isValidWidthChange) {
input.width(newWidth);
}


  };
  $.fn.resetAutosize = function(options){
    // alert(JSON.stringify(options));
    var minWidth = $(this).data('minwidth') || options.minInputWidth || $(this).width(),
        maxWidth = $(this).data('maxwidth') || options.maxInputWidth || ($(this).closest('.tagsinput').width() - options.inputPadding),
        val = '',
        input = $(this),
        testSubject = $('<tester/>').css({
            position: 'absolute',
            top: -9999,
            left: -9999,
            width: 'auto',
            fontSize: input.css('fontSize'),
            fontFamily: input.css('fontFamily'),
            fontWeight: input.css('fontWeight'),
            letterSpacing: input.css('letterSpacing'),
            whiteSpace: 'nowrap'
        }),
        testerId = $(this).attr('id')+'_autosize_tester';
    if(! $('#'+testerId).length > 0){
      testSubject.attr('id', testerId);
      testSubject.appendTo('body');
    }

    input.data('minwidth', minWidth);
    input.data('maxwidth', maxWidth);
    input.data('tester_id', testerId);
    input.css('width', minWidth);
  };

$.fn.addTag = function(value,options) {
options = jQuery.extend({focus:false,callback:true},options);
this.each(function() {
var id = $(this).attr('id');

var tagslist = $(this).val().split(delimiter[id]);
if (tagslist[0] == '') {
tagslist = new Array();
}

value = jQuery.trim(value);

if (options.unique) {
var skipTag = $(tagslist).tagExist(value);
if(skipTag == true) {
//Marks fake input as not_valid to let styling it
     $('#'+id+'_tag').addClass('not_valid');
     }
} else {
var skipTag = false;
}

if (value !='' && skipTag != true) {
                    $('<span>').addClass('tag').append(
                        $('<span>').text(value).append('&nbsp;&nbsp;'),
                        $('<a>', {
                            href : '#',
                            title : 'Removing tag',
                            text : 'x'
                        }).click(function () {
                            return $('#' + id).removeTag(escape(value));
                        })
                    ).insertBefore('#' + id + '_addTag');

tagslist.push(value);

$('#'+id+'_tag').val('');
if (options.focus) {
$('#'+id+'_tag').focus();
} else {
$('#'+id+'_tag').blur();
}

$.fn.tagsInput.updateTagsField(this,tagslist);

if (options.callback && tags_callbacks[id] && tags_callbacks[id]['onAddTag']) {
var f = tags_callbacks[id]['onAddTag'];
f.call(this, value);
}
if(tags_callbacks[id] && tags_callbacks[id]['onChange'])
{
var i = tagslist.length;
var f = tags_callbacks[id]['onChange'];
f.call(this, $(this), tagslist[i-1]);
}
}

});

return false;
};

$.fn.removeTag = function(value) {
value = unescape(value);
this.each(function() {
var id = $(this).attr('id');

var old = $(this).val().split(delimiter[id]);

$('#'+id+'_tagsinput .tag').remove();
str = '';
for (i=0; i< old.length; i++) {
if (old[i]!=value) {
str = str + delimiter[id] +old[i];
}
}

$.fn.tagsInput.importTags(this,str);

if (tags_callbacks[id] && tags_callbacks[id]['onRemoveTag']) {
var f = tags_callbacks[id]['onRemoveTag'];
f.call(this, value);
}
});

return false;
};

$.fn.tagExist = function(val) {
return (jQuery.inArray(val, $(this)) >= 0); //true when tag exists, false when not
};

// clear all existing tags and import new ones from a string
$.fn.importTags = function(str) {
                id = $(this).attr('id');
$('#'+id+'_tagsinput .tag').remove();
$.fn.tagsInput.importTags(this,str);
}

$.fn.tagsInput = function(options) {
    var settings = jQuery.extend({
      interactive:true,
      defaultText:'add tag',
      minChars:0,
      autocomplete: {selectFirst: false },
      'hide':true,
      'delimiter':',',
      'unique':true,
      removeWithBackspace:true,
      placeholderColor:'#666666',
      autosize: true,
      comfortZone: 5,
      inputPadding: 6*2
    },options);

this.each(function() {
if (settings.hide) {
$(this).hide();
}

var id = $(this).attr('id')

var data = jQuery.extend({
pid:id,
real_input: '#'+id,
holder: '#'+id+'_tagsinput',
input_wrapper: '#'+id+'_addTag',
fake_input: '#'+id+'_tag'
},settings);

delimiter[id] = data.delimiter;

if (settings.onAddTag || settings.onRemoveTag || settings.onChange) {
tags_callbacks[id] = new Array();
tags_callbacks[id]['onAddTag'] = settings.onAddTag;
tags_callbacks[id]['onRemoveTag'] = settings.onRemoveTag;
tags_callbacks[id]['onChange'] = settings.onChange;
}

var markup = '<div id="'+id+'_tagsinput" class="tagsinput"><div id="'+id+'_addTag">';

if (settings.interactive) {
markup = markup + '<input id="'+id+'_tag" value="" class="tagsInput half" data-default="'+settings.defaultText+'" />';
}

markup = markup + '</div><div class="tags_clear"></div></div>';

$(markup).insertAfter(this);

$(data.holder).css('width',settings.width);
$(data.holder).css('height',settings.height);

if ($(data.real_input).val()!='') {
$.fn.tagsInput.importTags($(data.real_input),$(data.real_input).val());
}
if (settings.interactive) {
$(data.fake_input).val($(data.fake_input).attr('data-default'));
$(data.fake_input).css('color',settings.placeholderColor);
$(data.fake_input).resetAutosize(settings);

$(data.holder).bind('click',data,function(event) {
$(event.data.fake_input).focus();
});

$(data.fake_input).bind('focus',data,function(event) {
if ($(event.data.fake_input).val()==$(event.data.fake_input).attr('data-default')) {
$(event.data.fake_input).val('');
}
$(event.data.fake_input).css('color','#000000');
});

if (settings.autocomplete_url != undefined) {
autocomplete_options = {source: settings.autocomplete_url};
for (attrname in settings.autocomplete) {
autocomplete_options[attrname] = settings.autocomplete[attrname];
}

if (jQuery.Autocompleter !== undefined) {
$(data.fake_input).autocomplete(settings.autocomplete_url, settings.autocomplete);
$(data.fake_input).bind('result',data,function(event,data,formatted) {
if (data) {
$('#'+id).addTag(data[0] + "",{focus:true,unique:(settings.unique)});
}
});
} else if (jQuery.ui.autocomplete !== undefined) {
$(data.fake_input).autocomplete(autocomplete_options);
$(data.fake_input).bind('autocompleteselect',data,function(event,ui) {
$(event.data.real_input).addTag(ui.item.value,{focus:true,unique:(settings.unique)});
return false;
});
}


} else {
// if a user tabs out of the field, create a new tag
// this is only available if autocomplete is not used.
$(data.fake_input).bind('blur',data,function(event) {
var d = $(this).attr('data-default');
if ($(event.data.fake_input).val()!='' && $(event.data.fake_input).val()!=d) {
if( (event.data.minChars <= $(event.data.fake_input).val().length) && (!event.data.maxChars || (event.data.maxChars >= $(event.data.fake_input).val().length)) )
$(event.data.real_input).addTag($(event.data.fake_input).val().toUpperCase(),{focus:true,unique:(settings.unique)});
} else {
$(event.data.fake_input).val($(event.data.fake_input).attr('data-default'));
$(event.data.fake_input).css('color',settings.placeholderColor);
}
return false;
});

}
// if user types a comma, create a new tag
$(data.fake_input).bind('keypress',data,function(event) {
if (event.which==event.data.delimiter.charCodeAt(0) || event.which==13 ) {
event.preventDefault();
if( (event.data.minChars <= $(event.data.fake_input).val().length) && (!event.data.maxChars || (event.data.maxChars >= $(event.data.fake_input).val().length)) )
$(event.data.real_input).addTag($(event.data.fake_input).val().toUpperCase(),{focus:true,unique:(settings.unique)});
$(event.data.fake_input).resetAutosize(settings);
return false;
} else if (event.data.autosize) {
$(event.data.fake_input).doAutosize(settings);

           }
});
//Delete last tag on backspace
data.removeWithBackspace && $(data.fake_input).bind('keydown', function(event)
{
if(event.keyCode == 8 && $(this).val() == '')
{
event.preventDefault();
var last_tag = $(this).closest('.tagsinput').find('.tag:last').text();
var id = $(this).attr('id').replace(/_tag$/, '');
last_tag = last_tag.replace(/[\s]+x$/, '');
$('#' + id).removeTag(escape(last_tag));
$(this).trigger('focus');
}
});
$(data.fake_input).blur();

//Removes the not_valid class when user changes the value of the fake input
if(data.unique) {
$(data.fake_input).keydown(function(event){
if(event.keyCode == 8 || String.fromCharCode(event.which).match(/\w+|[áéíóúÁÉÍÓÚñÑ,/]+/)) {
$(this).removeClass('not_valid');
}
});
}
} // if settings.interactive
return false;
});

return this;

};

$.fn.tagsInput.updateTagsField = function(obj,tagslist) {
var id = $(obj).attr('id');
$(obj).val(tagslist.join(delimiter[id]));
};

$.fn.tagsInput.importTags = function(obj,val) {
$(obj).val('');
var id = $(obj).attr('id');
var tags = val.split(delimiter[id]);
for (i=0; i<tags.length; i++) {
$(obj).addTag(tags[i],{focus:false,callback:false});
}
if(tags_callbacks[id] && tags_callbacks[id]['onChange'])
{
var f = tags_callbacks[id]['onChange'];
f.call(obj, obj, tags[i]);
}
};

})(jQuery);